///////////////////////////////////////////////////////////////////////////////
// For information as to what this class does, see the Javadoc, below.       //
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,       //
// 2007, 2008, 2009, 2010, 2014, 2015, 2022 by Peter Spirtes, Richard        //
// Scheines, Joseph Ramsey, and Clark Glymour.                               //
//                                                                           //
// This program is free software; you can redistribute it and/or modify      //
// it under the terms of the GNU General Public License as published by      //
// the Free Software Foundation; either version 2 of the License, or         //
// (at your option) any later version.                                       //
//                                                                           //
// This program is distributed in the hope that it will be useful,           //
// but WITHOUT ANY WARRANTY; without even the implied warranty of            //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
// GNU General Public License for more details.                              //
//                                                                           //
// You should have received a copy of the GNU General Public License         //
// along with this program; if not, write to the Free Software               //
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA //
///////////////////////////////////////////////////////////////////////////////

package edu.cmu.tetrad.util;

import javax.swing.*;
import java.awt.*;

/**
 * Stores some utility items for displaying JOptionPane messages.
 *
 * @author josephramsey
 * @version $Id: $Id
 */
public class JOptionUtils {
    private static JComponent COMPONENT;

    /**
     * Private constructor to prevent instantiation.
     */
    private JOptionUtils() {
    }

    /**
     * Sets the centering component used throughout. May be null.
     *
     * @param component Ibid.
     */
    public static void setCenteringComp(JComponent component) {
        JOptionUtils.COMPONENT = component;
    }

    /**
     * <p>centeringComp.</p>
     *
     * @return Ibid.
     */
    public static JComponent centeringComp() {
        return JOptionUtils.COMPONENT;
    }

    /**
     * <p>getCenteringFrame.</p>
     *
     * @return a {@link java.awt.Frame} object
     */
    public static Frame getCenteringFrame() {
        for (Container c = JOptionUtils.COMPONENT; c != null; c = c.getParent()) {
            if (c instanceof Frame) {
                return (Frame) c;
            }
        }

        return null;
    }
}





